US8417253B2 - Bandwidth and channel notification for wide-channel wireless communication - Google Patents

Bandwidth and channel notification for wide-channel wireless communication Download PDF

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Publication number
US8417253B2
US8417253B2 US12/660,224 US66022410A US8417253B2 US 8417253 B2 US8417253 B2 US 8417253B2 US 66022410 A US66022410 A US 66022410A US 8417253 B2 US8417253 B2 US 8417253B2
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channels
channel
bitmap
narrow channels
allocated
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US20110207488A1 (en
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Michelle X. Gong
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Intel Corp
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Intel Corp
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Priority to US12/660,224 priority Critical patent/US8417253B2/en
Priority to CN2010800663832A priority patent/CN102906246A/zh
Priority to EP10846788.7A priority patent/EP2539433A4/fr
Priority to PCT/US2010/055470 priority patent/WO2011106043A2/fr
Priority to JP2011024207A priority patent/JP5372038B2/ja
Priority to EP11747928.7A priority patent/EP2540126B1/fr
Priority to KR1020127021991A priority patent/KR101404372B1/ko
Priority to BR112012020712-1A priority patent/BR112012020712B1/pt
Priority to EP13163070.9A priority patent/EP2637461B1/fr
Priority to PCT/US2011/025717 priority patent/WO2011106316A2/fr
Priority to CN201110054047.2A priority patent/CN102315903B/zh
Priority to CN201210532271.2A priority patent/CN103067983B/zh
Priority to US13/209,077 priority patent/US9160499B2/en
Assigned to INTEL CORPORATION reassignment INTEL CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GONG, MICHELLE X.
Publication of US20110207488A1 publication Critical patent/US20110207488A1/en
Priority to JP2012264391A priority patent/JP2013066223A/ja
Application granted granted Critical
Publication of US8417253B2 publication Critical patent/US8417253B2/en
Priority to JP2015104588A priority patent/JP6293092B2/ja
Priority to US14/881,044 priority patent/US10129879B2/en
Priority to JP2018023003A priority patent/JP2018078661A/ja
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0092—Indication of how the channel is divided
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the devices may communicate with each other over multiple channels, each having a defined channel width.
  • some standards define a series of channels, each having a center frequency spaced 20 MHz from the next adjacent channel.
  • the defined bandwidth of each channel is therefore approximately 20 MHz, which can be used in wireless communications between devices.
  • a later standard defined a channel bandwidth of 40 MHz.
  • each 40 MHz channel may be achieved by combining two adjacent 20 MHz channels. It's a comparatively simple matter for a network controller to assign a 40 MHz channel when it only has to indicate a primary 20 MHz channel and the next adjacent channel up (or down).
  • FIG. 1 shows a wireless network, according to an embodiment of the invention.
  • FIG. 2 shows an information element (IE) for indicating which narrow channels may be combined to form a wide channel, according to an embodiment of the invention.
  • IE information element
  • FIG. 3 shows a portion of a transmission, according to an embodiment of the invention.
  • FIG. 4 shows a portion of a transmission, according to another embodiment of the invention.
  • FIGS. 5A and 5B show bitmap formats for indicating which of the allocated narrow channels are to be used in the current transmission, according to an embodiment of the invention.
  • FIG. 7 shows a modified version of the bitmap of FIG. 6 , according to an embodiment of the invention.
  • FIG. 8 shows yet another bitmap format for indicating which channels are to be used in the current transmission, according to an embodiment of the invention.
  • FIG. 9 shows a more detailed view of the bitmap of FIG. 8 , according to an embodiment of the invention.
  • FIG. 10 shows still another bitmap format for indicating which channels are to be used in the current transmission, according to an embodiment of the invention.
  • FIG. 11 shows a flow diagram of a method of allocating and selecting channels for subsequent communication, according to an embodiment of the invention.
  • references to “one embodiment”, “an embodiment”, “example embodiment”, “various embodiments”, etc. indicate that the embodiment(s) of the invention so described may include particular features, structures, or characteristics, but not every embodiment necessarily includes the particular features, structures, or characteristics. Further, some embodiments may have some, all, or none of the features described for other embodiments.
  • Coupled is used to indicate that two or more elements are in direct physical or electrical contact with each other.
  • Connected is used to indicate that two or more elements are in direct physical or electrical contact with each other.
  • Connected is used to indicate that two or more elements are in direct physical or electrical contact with each other.
  • Connected is used to indicate that two or more elements are in direct physical or electrical contact with each other.
  • Coupled is used to indicate that two or more elements co-operate or interact with each other, but they may or may not be in direct physical or electrical contact.
  • Various embodiments of the invention may be implemented in one or any combination of hardware, firmware, and software.
  • the invention may also be implemented as instructions contained in or on a computer-readable medium, which may be read and executed by one or more processors to enable performance of the operations described herein.
  • a computer-readable medium may include any mechanism for storing information in a form readable by one or more computers.
  • a computer-readable medium may include a tangible storage medium, such as but not limited to read only memory (ROM); random access memory (RAM); magnetic disk storage media; optical storage media; a flash memory device, etc.
  • wireless may be used to describe circuits, devices, systems, methods, techniques, communications channels, etc., that communicate data by using modulated electromagnetic radiation through a non-solid medium. The term does not imply that the associated devices do not contain any wires, although in some embodiments they might not.
  • a wireless device may comprise at least one antenna, at least one radio, and at least one processor, where the radio's transmitter transmits signals through the antenna that represent data and the radio's receiver receives signals through the antenna that represent data, while the processor may process the data to be transmitted and the data that has been received. The processor may also process other data which is neither transmitted nor received.
  • Network controller is intended to cover devices that schedule and control, at least partially, wireless communications by other devices in the network.
  • Network controllers may also be known as base stations (BS), access points (AP), central points (CP), or any other term that may arise to describe the functionality of a network controller.
  • mobile device is intended to cover those devices whose wireless communications are at least partially scheduled and controlled by the network controller.
  • Mobile devices may also be known as mobile nodes, STA's, subscriber stations (SS), user equipment (UE), or any other term that may arise to describe the functionality of a mobile device. Mobile devices may generally move during such communications, but movement is not required.
  • a ‘narrow’ channel is a wireless communications channel having a pre-defined bandwidth in the frequency spectrum
  • a ‘wide’ channel is a channel having the combined portions of the frequency spectrum occupied by multiple ones of these narrow channels.
  • these narrow channels don't have to be contiguous, i.e., two narrow channels that are included in the wide channel may be separated by one or more narrow channels that are not included in the wide channel.
  • the narrow channels may frequently be described herein as having a 20 MHz bandwidth, while the wide channels may be described as having a bandwidth that is an integer multiple of 20 MHz, but other embodiments may use narrow-channel bandwidths other than 20 MHz.
  • ‘available’ channels are those channels that are permitted for use within the network. This may be defined by industry standards, for example, or by the NC for the collective use by the devices in its network. As used in this document, ‘allocated’ channels are those available channels that the NC has specified for use by a particular MD, and may be changed from time to time by the NC.
  • various embodiments of the invention may enable a NC to indicate to a MD which of those narrow channels the MD may use in subsequent wide-channel communication, and may also enable a way to specify which of those indicated channels are actually being used in those subsequent communications.
  • FIG. 1 shows a wireless network, according to an embodiment of the invention.
  • NC 110 is shown communicating wirelessly with mobile device 120 , through their antennas 115 and 125 , respectively.
  • Each illustrated antenna 115 , 125 may be a single antenna or multiple antennas, depending on the technology being used.
  • MD mobile device
  • FIG. 2 shows an information element (IE) for indicating which narrow channels may be combined to form a wide channel, according to an embodiment of the invention.
  • IE information element
  • the IE may be located in the body of a MAC frame, but other embodiments may place it elsewhere.
  • This particular IE may be included in a larger transmission from the NC to a MD, to indicate to that MD which narrow channels the MD may use for subsequent wide channel communications.
  • FIG. 2 shows a particular arrangement of fields in the IE, but other arrangements may also be used.
  • the MD may choose to use all or only some of the indicated narrow channels in its subsequent wide channel communications, and may change that choice as often as it is possible to specify such a change.
  • the IE may begin with the standard Element ID field, which indicates what type of IE this is (in this case, an IE that defines which narrow channels may be included in the wide channel), followed by the Length field, which indicates how much of the following bit stream is a part of this IE.
  • the next field shows how many non-primary channels are indicated by this IE (three are shown in FIG. 2 ).
  • the primary channel is the narrow channel that a device may use when the other narrow channels are still unknown, and can be used in both wide- and narrow-channel communication.
  • the non-primary channels are therefore the remaining narrow channels that may be combined with the primary channel to construct the wide channel defined by this IE.
  • the primary channel is always used in communications, either by itself or in combination with the non-primary channels.
  • the primary channel may have been previously defined and identified through means that are beyond the scope of this document.
  • the rest of the illustrated IE identifies the non-primary channels in multiple Channel Number fields, with each one identifying a specific non-primary narrow channel.
  • the IE may also contain fields to indicate the regulatory class. In the illustrated example there is a separate regulatory class field associated with, and preceding, each channel number field, but other embodiments may differ (e.g., a single regulatory class may be used for all the indicated narrow channels, thus requiring only a single field to define that regulatory class).
  • the regulatory class may specify the bandwidth of the narrow channel. This is especially useful in environments in which the bandwidth of the narrow channels is not the same throughout all the available narrow channels.
  • the IE contains no information on the primary channel (since it is already known), but other embodiments may include information on the primary channel. In other embodiments, the IE may also contain other information not shown here.
  • FIG. 3 shows a portion of a transmission, according to an embodiment of the invention.
  • a previous communication has specified three non-primary narrow channels that can be used in combination with a primary fourth channel to communicate over a wide channel, and these four 20 MHz channels are indicated by the four illustrated rows.
  • these narrow channels are contiguous, although this assumption is not required for an understanding of the drawing.
  • the format shown in FIG. 3 may be part of a preamble of a larger transmission.
  • the receiving device may not know which of the narrow channels the transmitting device is going to use.
  • the transmitting device may transmit the first few fields in parallel on each of the four narrow channels (including the primary channel). This should guarantee that no matter which narrow channel the receiving device monitors, it can correctly receive these fields. It also provides a backup signal in case one of the narrow channels suffers from interference, distortion, or weak signal strength.
  • the first two fields are the Short Training Field (STF) and the Long Training Field (LTF), which the receiving device will need to properly acquire and synchronize on the signal.
  • the next two fields may provide information on how the remaining transmission is going to use the indicated channels. In this case, they indicate the subsequent signals will be modulated into an 80 MHz wide channel. A repeat of the training may then be done on this new 80 MHz wide channel. Use of the indicated wide channel may then continue for the remainder of the packet, frame, or whatever unit of communication it applies to.
  • the illustrated fields include prefixes to indicate legacy protocols (L) and very high throughput (VHT) protocols to accommodate both older legacy devices and newer high throughput devices, but these protocols may be different than shown, depending on the capabilities of the system.
  • FIG. 4 shows a portion of a transmission, according to another embodiment of the invention.
  • the primary difference between FIG. 3 and FIG. 4 is that the transmitting device has chosen to use only two of the four allocated narrow channels, to create a 40 MHz wide channel for its communication.
  • the primary channel ‘P’ (the second narrow channel in this example) is included in the two narrow channels that are selected for use.
  • FIGS. 5A and 5B show bitmap formats for indicating which of the allocated narrow channels are to be used in the current transmission, according to an embodiment of the invention.
  • the bitmap is located in the VHT-SIG field of the preamble (e.g., as shown in FIGS. 3 and 4 ), but other embodiments may place it elsewhere.
  • the NC may use the bitmap format to specify which of those allocated channels it is using in its current transmission.
  • the NC may indicate which of the previously-allocated channels it is using in its current transmission to the MD.
  • FIGS. 5A , 5 B provide a compact method of indicating which narrow channels may be combined into a wide channel. Narrow channels with a width of 20 MHz are shown, but other channel widths may be used instead.
  • the maximum wide-channel width in the network is 80 MHz, only two bits may be needed to specify whether the channels being used by the transmitting device are to cover 20, 40, 60, or 80 MHz, as shown in FIG. 5A . Since only contiguous channels are indicated with this format, knowing the primary channel and the number of contiguous non-primary channels is sufficient to define which channels they are. Three bits may be sufficient to expand this up to 100, 120, 140, or 160 MHz, as shown in FIG. 5B . Additional bits may expand this to even larger wide channels.
  • FIG. 6 shows another bitmap format for indicating which of the allocated narrow channels are to be used in the current transmission, according to an embodiment of the invention.
  • each bit in the map represents a particular narrow channel. For example, if that bit is a ‘1’, the associated channel is selected, while a value of ‘0’ indicates that channel is not selected. (Of course, the opposite polarities may be used instead.)
  • there are 24 bits to represent 24 narrow channels and the channels are labeled with channel numbers 36 through 165 in increments of 4, which is a common method of numbering channels under some versions of the industry standard IEEE 802.11.
  • channel numbers 36 through 165 is a common method of numbering channels under some versions of the industry standard IEEE 802.11.
  • other numbers of bits and other channel numbering conventions may also be used with this format.
  • This format is extremely flexible, since it does not require contiguous channels, and all the channels in the spectrum are represented (even those that were not allocated). However, using that many bits in every preamble may be unacceptable in some environments.
  • FIG. 7 shows a modified version of the bitmap of FIG. 6 , according to an embodiment of the invention.
  • each bit is associated with one of the channels permitted under the current regulations and industry standards, while in FIG. 7 each bit is associated with one of the channels previously allocated by the NC.
  • the first bit of FIG. 7 is associated with the first channel indicated in the IE of FIG. 2 (channel 44 ).
  • the second and third bits of FIG. 7 are associated with the second and third channels indicated in the IE (channels 149 and 157 , respectively).
  • 40 MHz channels may be pre-defined by an industry standard as consisting of any of these two pairs of adjacent 20 MHz channels: 36 / 40 , 44 / 48 , 52 / 56 , 60 / 64 , 100 / 104 , 108 / 112 , 116 / 120 , 124 / 128 , 132 / 136 , 149 / 153 , 157 / 161 .
  • Certain regulatory classes may specify that a narrow channel has a 40 MHz width and whether the adjacent channel is up or down from the primary 20 MHz channel, so the IE of FIG. 2 may be used to indicate these without further definition in the communication itself
  • the bitmaps of FIGS. 5A , 5 B, 6 , and 7 may be modified in such cases by simply replacing each 20 MHz channel with a 40 MHz channel, and/or by replacing each 20 MHz bandwidth with a 40 MHz bandwidth.
  • the available channels may be divided into segments, and the selected channels in each segment may be indicated separately.
  • the selected narrow channels may have any pre-determined width, such as 20 MHz, 40 MHz, or other width.
  • the pre-defined 20 MHz channels 36 , 40 , 44 , and 48 may be placed in Segment 1
  • channels 149 , 153 , 157 , and 161 may be placed in Segment 2 .
  • the selection may be a bit-to-channel correspondence (similar to FIGS. 6 and 7 ) or a total-bit-value to total-bandwidth correspondence (similar to FIGS. 5A and 5B ).
  • FIGS. 5A and 5B may use more than two segments, and/or more that two bits per segment without deviating from the basic concept.
  • FIG. 8 shows yet another bitmap format for indicating which channels are to be used in the current transmission, according to an embodiment of the invention.
  • the first two bits of a four-bit entry may indicate the selected channels in Segment 1 and the next two bits of that entry may indicate the selected channels in Segment 2 .
  • a value of ‘00’ in the first two bits may select the primary channel only, a value of ‘10’ may selects the lower 40 MHz of channels in Segment 1 (including the primary channel), while a value of ‘11’ may select all 80 MHz of channels in Segment 1 .
  • a value of 00 in the next two bits may select none of the channels in Segment 2
  • a value of ‘01’ may select the upper 40 MHz of channels
  • a value of ‘10’ may select the lower 40 MHz of channels
  • a value of ‘11’ may select both the upper and lower 40 MHz of channels for a total of 80 MHz in Segment 2 .
  • each individual ‘1’ bit indicates the selection of a 40 MHz channel that consists of two adjacent 20 MHz channels.
  • FIG. 9 shows a more detailed view of the bitmap of FIG. 8 , according to an embodiment of the invention.
  • channel 36 is the primary 20 MHz channel
  • channels 40 , 44 , and 48 represent the non-primary 20 MHz channels in Segment 1
  • channels 149 , 153 , 157 , and 161 represent the non-primary 20 MHz channels in Segment 2 .
  • each ‘1’ bit selects a 40 MHz combination of two adjacent 20 MHz channels ( 36 / 40 , 44 / 48 , 149 / 153 , or 157 / 161 ), while the value ‘0000’ selects only the 20 MHz primary channel.
  • FIG. 10 shows still another bitmap format for indicating which channels are to be used in the current transmission, according to an embodiment of the invention.
  • Most of the entries in the previously described bitmaps have been defined in one of two ways: 1) each bit corresponds to a specific narrow channel, or 2) the value of a multi-bit number corresponds to the collective bandwidth of a group of contiguous narrow channels. But in another approach, the value of a multi-bit number in the bitmap may correspond to a particular pre-defined combination of channels, which may have any bandwidth and may be non-contiguous. This approach is extremely flexible in the variety of channels and channel widths that may be indicated with a small multi-bit combination, since those factors are pre-defined and therefore don't need to be defined by the bitmap.
  • FIG. 10 shows an example.
  • a simple three-bit value can indicate eight different combinations of channels. These channels may have various widths, may be placed in different segments, and may be contiguous or non-contiguous. In such an embodiment, there is no pre-defined correspondence between any particular bit and any particular channel(s), and no internal limit on how many of the available channels may be represented by a particular value.
  • each bit may represent a different pre-defined multi-channel combination, and a value containing multiple ‘1’ bits would therefore indicate a larger combination of two or more of the pre-defined channel combinations.
  • FIG. 11 shows a flow diagram of a method of allocating and selecting channels for subsequent communication, according to an embodiment of the invention.
  • Flow diagram 1100 shows activities by both the NC and an MD in their communications with each other.
  • the NC may transmit a message containing information that allocates specific ones of the available narrow channels that may be used in subsequent communications.
  • this message may be a beacon, a probe response, or a neighbor report, but other embodiments may differ.
  • the information may be contained within an Information Element (IE), as IE's are defined in various industry standards (e.g., such as IEEE 802.11).
  • IE Information Element
  • the MD When the MD receives the message at 1115 , it may record the list of allocated channels for use in subsequent communications. When ready to transmit back to the NC, the MD may compose the transmission at 1120 , and at 1125 select which of the allocated channels it will use for this transmission. This selection may be based on various factors which are not discussed here in detail. At 1130 the MD may create a bitmap for inclusion in this transmission, with that bitmap indicating which channels it has selected for this transmission. In some embodiments the bitmap may be placed in a SIG field in the preamble of the transmission. At 1135 the MD transmits the message to the NC, which receives it at 1140 .
  • the NC may perform the same basic process at 1145 - 1160 that was performed by the MD at 1120 - 1135 . However, at 1150 it may select the same or different channels than were selected by the MD at 1125 . This process of communicating back and forth may continue with the same list of allocated channels at 1115 - 1160 for as long as the NC chooses. However, if the NC chooses to change the list of allocated channels, it may return to 1110 to transmit the new list to the MD, including the information in whatever type of message is deemed suitable.
  • the NC may transmit a different list of allocated channels to the MD than the NC will use in its subsequent transmissions to the MD (i.e., the list will be different for NC-to-MD transmissions than for MD-to-NC transmissions).
  • the list of allocated channels may be used for direct communications between the MD and another MD, where such peer-to-peer communications are allowed.

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  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)
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US12/660,224 2010-02-23 2010-02-23 Bandwidth and channel notification for wide-channel wireless communication Active 2030-11-22 US8417253B2 (en)

Priority Applications (17)

Application Number Priority Date Filing Date Title
US12/660,224 US8417253B2 (en) 2010-02-23 2010-02-23 Bandwidth and channel notification for wide-channel wireless communication
CN2010800663832A CN102906246A (zh) 2010-02-23 2010-11-04 改进的微生物燃料电池
EP10846788.7A EP2539433A4 (fr) 2010-02-23 2010-11-04 Pile à combustible microbienne améliorée
PCT/US2010/055470 WO2011106043A2 (fr) 2010-02-23 2010-11-04 Pile à combustible microbienne améliorée
JP2011024207A JP5372038B2 (ja) 2010-02-23 2011-02-07 ワイドチャンネル無線通信のための帯域幅通知及びチャンネル通知
KR1020127021991A KR101404372B1 (ko) 2010-02-23 2011-02-22 와이드 채널 무선 통신을 위한 대역폭 및 채널 통지
BR112012020712-1A BR112012020712B1 (pt) 2010-02-23 2011-02-22 Largura de banda e notificação de canal para comunicação sem fio de canal largo
EP13163070.9A EP2637461B1 (fr) 2010-02-23 2011-02-22 Largeur de bande et notification de canal pour communication sans fil à plusieurs canaux
PCT/US2011/025717 WO2011106316A2 (fr) 2010-02-23 2011-02-22 Notification de largeur de bande et de canal pour communication sans fil à canal large bande
EP11747928.7A EP2540126B1 (fr) 2010-02-23 2011-02-22 Notification de largeur de bande et de canal pour communication sans fil à canal large bande
CN201110054047.2A CN102315903B (zh) 2010-02-23 2011-02-23 宽信道无线通信的带宽和信道通知
CN201210532271.2A CN103067983B (zh) 2010-02-23 2011-02-23 宽信道无线通信的带宽和信道通知
US13/209,077 US9160499B2 (en) 2010-02-23 2011-08-12 Bandwidth and channel notification for wide-channel wireless communication
JP2012264391A JP2013066223A (ja) 2010-02-23 2012-12-03 ワイドチャンネル無線通信のための装置、方法、及び記憶媒体
JP2015104588A JP6293092B2 (ja) 2010-02-23 2015-05-22 ワイドチャンネル無線通信のための装置、方法、及びコンピュータ可読不揮発記憶媒体
US14/881,044 US10129879B2 (en) 2010-02-23 2015-10-12 Bandwidth and channel notification for wide-channel wireless communication
JP2018023003A JP2018078661A (ja) 2010-02-23 2018-02-13 ワイドチャンネル無線通信のための装置、方法、及びコンピュータ可読記憶媒体

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US12/660,224 US8417253B2 (en) 2010-02-23 2010-02-23 Bandwidth and channel notification for wide-channel wireless communication

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US8417253B2 true US8417253B2 (en) 2013-04-09

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US12/660,224 Active 2030-11-22 US8417253B2 (en) 2010-02-23 2010-02-23 Bandwidth and channel notification for wide-channel wireless communication
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